Search Engines-

A search engine is a website that acts similar to a card catalog for the Internet. Search engines use spider programs to index and locate desired information. The search engine program will find information on the Internet based on the keywords that are entered by the user.

For example, if you type “apple pie recipe” into a search engine it will look to its index of information available on the Internet that most closely relates to “apple pie recipe.” Any site that uses apple pie as one of the keywords will be in the search engine’s index.
Some popular search engines include: www.google.com, www.yahoo.com, www.ask.com and www.msn.com.